Scared of coop

So my husband decided to install a new door in the coop. It's an automatic door so the chickens could get in and out at a set time. Of course, all the drilling and hammering kept the chickens away, but I thought this was going to be just temporary.

So we go to feed the chickens by putting the food in the coop and nobody goes inside. Since the ramp is now by this new door's entrance, we thought maybe the lack of ramp was making them reluctant to enter.

So BIG MISTAKE, I move the ramp to the door they were used to using and they ALL panic just because I moved the ramp. Chicken flying everywhere. Roosters making weird noises like chickens who who just laid an egg. Me calling them back and only 3 chickens came close to the coop but stayed away at a distance. The rooster was calling them to gather under the big tree.

Now I see all the chickens under the big mesquite tree. And a couple are on top of some branches. Now I am afraid they have decided to roost there tonight. My husband says once they roost on the tree they will likely never sleep again in the coop. Is this true? My husband is very angry at this point because he spent a lot of money and time building the automatic door.

Any ideas what to do? I am at home now and thinking to let them just be because nothing works. Hopefully, by the time it's starting to get dark some may decide to go in the coop. But the rooster is the pain since he keeps calling them under the tree.

Thanks TwinsLoveChicks, problem is they are free range chicken and I cannot chase them around 1 acre!

I am worried that they will be out and not safe and that they will no longer go sleep in the coop at night. How do I get the eggs as well if they roost outside and no longer use the $1,000 coop we built them ? Their laying boxes are in the coop.

Once they are asleep they should be easy to pick up and move. I wouldn't shine a flashlight directly on them, that annoys mine when they are sleeping, but have it a bit further away so you can see but not too bright.

Can you lure them by calling them and using treats? If I go out and do the "chook chook" call and sprinkle their favorite treats, they always follow me. But it has to be me. They don't do it for my husband.